Pali zizindikiro zambiri zaukadaulo za zipangizo za graphite anode, ndipo n'zovuta kuziganizira, makamaka kuphatikizapo malo enieni a pamwamba, kugawa kwa tinthu tating'onoting'ono, kuchuluka kwa tap, kuchuluka kwa compaction, kuchuluka kwenikweni, mphamvu yeniyeni ya first charge ndi discharge, mphamvu yoyamba, ndi zina zotero. Kuphatikiza apo, pali zizindikiro zamagetsi monga momwe zimagwirira ntchito mozungulira, kuchuluka kwa magwiridwe antchito, kutupa, ndi zina zotero. Ndiye, kodi zizindikiro za magwiridwe antchito a zipangizo za graphite anode ndi ziti? Zotsatirazi zikubweretsedwa kwa inu ndi HCMilling (Guilin Hongcheng), wopanga wazipangizo za anode mphero yopera.

01 malo enieni a pamwamba

Amatanthauza malo a pamwamba pa chinthu pa unit mass. Tinthu tating'onoting'ono tikakhala tating'ono, malo enieniwo amakhala aakulu.

Electrode yoyipa yokhala ndi tinthu tating'onoting'ono komanso malo apamwamba kwambiri ili ndi njira zambiri komanso njira zazifupi zosunthira ma ion a lithiamu, ndipo magwiridwe antchito a liwiro ndi abwino. Komabe, chifukwa cha malo akuluakulu olumikizirana ndi electrolyte, malo opangira filimu ya SEI nawonso ndi akulu, ndipo magwiridwe antchito oyamba nawonso adzakhala otsika. . Tinthu tating'onoting'ono tomwe timakhala ndi ubwino wokhala ndi kuchuluka kwakukulu kwa ma compaction.

Malo enieni a pamwamba pa zinthu za graphite anode ndi ochepera 5m2/g.

02 Kugawa kukula kwa tinthu

Kukula kwa tinthu tating'onoting'ono ta graphite anode kumakhudza momwe zinthuzo zimagwirira ntchito pogwiritsa ntchito magetsi ndikuti kukula kwa tinthu tating'onoting'ono ta anode kumakhudza mwachindunji kuchuluka kwa madzi omwe amatuluka komanso malo enieni a zinthuzo.

Kukula kwa kuchuluka kwa madzi pampopi kudzakhudza mwachindunji kuchuluka kwa mphamvu ya zinthuzo, ndipo kugawa kwa tinthu toyenera kokha ndi komwe kungapangitse kuti zinthuzo zigwire bwino ntchito.

03 Kuchuluka kwa Tap

Kuchuluka kwa pompu ndi kulemera kwa voliyumu pa unit yomwe imayesedwa ndi kugwedezeka komwe kumapangitsa kuti ufa uwonekere mu mawonekedwe omangika bwino. Ndi chizindikiro chofunikira poyesa zinthu zogwira ntchito. Kuchuluka kwa batri ya lithiamu-ion kumakhala kochepa. Ngati kuchuluka kwa pompu kuli kwakukulu, zinthu zogwira ntchito pa unit zimakhala ndi kulemera kwakukulu, ndipo mphamvu ya voliyumu ndi yayikulu.

04 Kuchulukana kwa Kukanikiza

Kuchulukana kwa pole kumakhudza makamaka chidutswa cha pole, chomwe chimatanthauza kuchulukana kwa pole pambuyo pogubuduza pambuyo poti chinthu chogwira ntchito cha electrode yoyipa ndipo chomangiracho chapangidwa kukhala chidutswa cha pole, kuchulukana kwa pole = kuchulukana kwa dera / (kukhuthala kwa chidutswa cha pole pambuyo pogubuduza kuchotsa makulidwe a zojambulazo zamkuwa).

Kuchulukana kwa kukanikizana kumagwirizana kwambiri ndi mphamvu ya pepala, magwiridwe antchito ake, kukana kwa mkati ndi momwe batire imagwirira ntchito.

Zinthu zomwe zimakhudza kuchulukana kwa tinthu tating'onoting'ono: kukula kwa tinthu tating'onoting'ono, kufalikira kwake, ndi mawonekedwe ake zonse zimakhudza.

05 Kuchulukana Koona

Kulemera kwa chinthu cholimba pa unit voliyumu ya chinthu chomwe chili chokhuthala kwambiri (kupatula malo opanda kanthu mkati).

Popeza kuchuluka kwenikweni kumayesedwa mu mkhalidwe wokhuthala, kudzakhala kwakukulu kuposa kuchuluka kwa tapped. Kawirikawiri, kuchuluka kwenikweni > kuchuluka kwa tapped > kuchuluka kwa tapped.

06 Kuchaja koyamba ndi mphamvu yeniyeni yotulutsira

Zinthu za graphite anode zimakhala ndi mphamvu yosasinthika mu nthawi yoyamba yoyatsira ndi kutulutsa mphamvu. Pa nthawi yoyamba yoyatsira mphamvu ya batri ya lithiamu-ion, pamwamba pa zinthu za anode pamakhala ma ion a lithiamu ndipo ma molecule osungunulira mu electrolyte amaikidwa pamodzi, ndipo pamwamba pa zinthu za anode amawola kupanga SEI. Filimu yodutsa mphamvu. Pokhapokha pamwamba pa electrode yoyipa itaphimbidwa kwathunthu ndi filimu ya SEI, ma molecule osungunulira mphamvu sakanatha kusakanikirana, ndipo zomwe zimachitikazo zinayimitsidwa. Kupanga kwa filimu ya SEI kumadya gawo la ma ion a lithiamu, ndipo gawo ili la ma ion a lithiamu silingachotsedwe pamwamba pa electrode yoyipa panthawi yotulutsa mphamvu, motero kumayambitsa kutayika kwa mphamvu yosasinthika, motero kuchepetsa mphamvu yeniyeni ya kutulutsa koyamba.

07 Kugwira Ntchito Koyamba kwa Coulomb

Chizindikiro chofunikira poyesa momwe zinthu za anode zimagwirira ntchito ndi momwe zimagwirira ntchito poyamba, zomwe zimadziwikanso kuti mphamvu ya Coulomb yoyamba. Kwa nthawi yoyamba, mphamvu ya Coulombic imatsimikizira mwachindunji momwe zinthu za electrode zimagwirira ntchito.

Popeza filimu ya SEI imapangidwa kwambiri pamwamba pa zinthu za elekitirodi, malo enieni a zinthu za elekitirodi amakhudza mwachindunji malo opangidwira filimu ya SEI. Malo enieni a pamwamba amakhala akulu, malo olumikizirana ndi elekitirodi amakhala akulu komanso malo opangira filimu ya SEI amakhala akulu.

Kawirikawiri amakhulupirira kuti kupangidwa kwa filimu yokhazikika ya SEI kumapindulitsa pakuchaja ndi kutulutsa batri, ndipo filimu yosasunthika ya SEI siigwirizana ndi zomwe zimachitika, zomwe zimadya electrolyte mosalekeza, kukulitsa makulidwe a filimu ya SEI, ndikuwonjezera kukana kwamkati.

08 Kugwira ntchito kwa njinga

Kugwira ntchito kwa batri nthawi zonse kumatanthauza kuchuluka kwa ma chaji ndi kutulutsa komwe batri imakumana nako pansi pa dongosolo linalake la chaji ndi kutulutsa pamene mphamvu ya batri imatsika kufika pamtengo wodziwika. Ponena za kugwira ntchito kwa chaji, filimu ya SEI idzaletsa kufalikira kwa ma lithiamu ion mpaka pamlingo winawake. Pamene kuchuluka kwa ma chaji kukukwera, filimu ya SEI idzapitiriza kugwa, kuchotsedwa, ndi kuikidwa pamwamba pa electrode yoyipa, zomwe zimapangitsa kuti pang'onopang'ono kukana kwamkati kwa electrode yoyipa kuwonjezere, zomwe zimabweretsa kutentha Kusonkhanitsa ndi kutaya mphamvu.

09 Kukula

Pali mgwirizano wabwino pakati pa kukula ndi moyo wa kuzungulira. Pambuyo poti electrode yoyipa yakula, choyamba, pakati pa kuzunguliza padzasokonekera, tinthu ta electrode yoyipa tidzapanga ming'alu yaying'ono, filimu ya SEI idzasweka ndikukonzedwanso, electrolyte idzagwiritsidwa ntchito, ndipo magwiridwe antchito a kuzungulira adzachepa; chachiwiri, diaphragm idzafinyidwa. Kupanikizika, makamaka kutulutsa kwa diaphragm m'mphepete mwa ngodya yakumanja ya khutu la pole, ndi koopsa kwambiri, ndipo n'zosavuta kuyambitsa mpweya wa micro-short circuit kapena micro-metal lithium ndi kupita patsogolo kwa kayendedwe ka charge-discharge.

Ponena za kukulitsa kokha, ma lithiamu ayoni adzaikidwa mu graphite interlayer space panthawi ya graphite intercalation process, zomwe zimapangitsa kuti space ya interlayer space ikule komanso kuchuluka kwa voliyumu. Gawo lokulitsa ili silingasinthe. Kuchuluka kwa kukulitsa kukugwirizana ndi kuchuluka kwa electrode yoyipa, digiri ya orientation = I004/I110, yomwe ingawerengedwe kuchokera ku data ya XRD. Zinthu za anisotropic graphite zimakonda kukulirakulira mbali imodzi (C-axis direction ya graphite crystal) panthawi ya lithiamu intercalation process, zomwe zingapangitse kuti batri ikule kwambiri.

10Voterani momwe zinthu zilili

Kufalikira kwa ma ayoni a lithiamu mu graphite anode kumatsogolera bwino, ndiko kuti, kungangoyikidwa molunjika kumapeto kwa C-axis ya graphite crystal. Zipangizo za anode zokhala ndi tinthu tating'onoting'ono komanso malo apamwamba kwambiri zimakhala ndi magwiridwe antchito abwino. Kuphatikiza apo, kukana kwa pamwamba pa electrode (chifukwa cha filimu ya SEI) ndi electrode conductivity zimakhudzanso magwiridwe antchito a liwiro.

Mofanana ndi moyo wa kuzungulira ndi kukula, ma electrode a isotropic negative ali ndi njira zambiri zoyendera ma lithiamu ion, zomwe zimathetsa mavuto a kulowa kochepa komanso kuchuluka kochepa kwa ma diffusion mu kapangidwe ka anisotropic. Zipangizo zambiri zimagwiritsa ntchito ukadaulo monga granulation ndi coating kuti ziwongolere magwiridwe antchito awo.

HCMilling (Guilin Hongcheng) ndi kampani yopanga mphero yopukusira zinthu za anode.Mndandanda wa HLMXzipangizo za anode wapamwamba kwambiri-mphero yoyimirira bwino, HCHzipangizo za anode mphero yabwino kwambirindi mphero ina yopera ya graphite yomwe timapanga yakhala ikugwiritsidwa ntchito kwambiri popanga zipangizo za graphite anode. Ngati muli ndi zosowa zina zofanana, chonde titumizireni uthenga kuti mudziwe zambiri za zidazo ndi kutipatsa malangizo otsatirawa:

Dzina la zinthu zopangira

Kusalala kwa chinthu (maukonde/μm)

mphamvu (t/h)